What is a plant?

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You would think that the above question has a very easy answer. Plants are green, plants need the sun, plants grow, plants use water. All true answers and all descriptions that can be applied to other living organisms. Last week the students of Honors Biology learned all about the things that make plants their own unique kingdom. As we roll into next week we will be well on our way to preparing for the EOC, but for now we are going to take a few minutes to reflect on the week of 4/16-4/20. For this installment of week in review we look to Natalie Farrell and Catherine Parker.

Natalie Begins:

This week in Biology we learned about the basic characteristics of a plant and how plants survive. These are including, but not limited to the fact that Plants are mulitcellular and autotrophic. Some basic survival needs of plants are water, sunlight and gas exchange. We also learned the four types of plants, which are Bryophytes, ferns, gymnosperms, and angiosperms. We learned how to compare and contrast the differences between the four. We learned about the structure of seed plants, and their growth periods whether they were annuals or biennials. We drew a picture of a plants structure and how the plant is fertilized. We also did a lab on how certain conditions prevent different substances from moving through plants by having 3 celery stalks in food colored water. One stalk had no leaves, one stalk had leaves with petroleum jelly on it, and one stalk was perfectly normal. We found out that the stalk that was perfectly normal moved liquids, and let out gasses quicker than the other two. Later on in the week, we started learning about animals, and our teacher Mr. Kite allowed us to make our own animals with play-doh, then we watched a very educational video on the different animals in places like the grasslands and the tundras.

Catherine adds:

In this new unit we are learning about Plants. We know that the characteristics of plants. they have to be Multicellular Eukaryotes, carry out photosynthesis using chlorophyl, and are autotrophic. There are 3 different things that plants need to survive: Sun light ,because plants have developed adaptation that help them to collect a maximum amount of sun. Water/Minerals, because plants absorb water and minerals from soil. Last but not least Gas exchange , cause it needs to take in carbon dioxide and let off oxygen. There are 4 major types of plants : Bryophytes, Ferns, Gymnosperms, and Angiosperms. we also know that the 3 major life cycles: Annuals, Biennials, Perennials. The 3 major parts of the plants are : Roots, stems, and leaves. The Root absorbs water and nutrients from the soil, Stems, are the support system for the plant's body. The leaves contain stomata which regulate -how much water leaves the plant and gas exchange. Two major types of Vascular tissue are Xylem, they transport water and minerals. The Phloem, carries sugars. the 2 type of roots are Tap Roots , they grow deep and the other one is Fibrous , and they grow crazy. In the Flower plants have stamen, ovule, ovary, pollen tube, and the carpel. The Female gametes are found on the "Ovary" . Pollination : transfer of pollen to the stigma of a flower. Most Gymnosperms send their pollen out on the wind. Most Angiosperm replay on animals for pollination. Seed transfer : carried on the wind , Animals eat fruit and poop seeds, and they travel by water.


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